[PATCH net-next 2/4] tunneling: Capture inner mac header during encapsulation.
From: Pravin B Shelar <hidden>
Date: 2013-02-16 01:04:26
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
This patch adds missing inner mac header. This will be used in next patch. Signed-off-by: Pravin B Shelar <redacted> --- include/linux/skbuff.h | 34 ++++++++++++++++++++++++++++++++++ net/core/skbuff.c | 2 ++ 2 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 821c7f4..d7f96ff 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h@@ -387,6 +387,7 @@ typedef unsigned char *sk_buff_data_t; * @vlan_tci: vlan tag control information * @inner_transport_header: Inner transport layer header (encapsulation) * @inner_network_header: Network layer header (encapsulation) + * @inner_mac_header: Link layer header (encapsulation) * @transport_header: Transport layer header * @network_header: Network layer header * @mac_header: Link layer header
@@ -505,6 +506,7 @@ struct sk_buff { sk_buff_data_t inner_transport_header; sk_buff_data_t inner_network_header; + sk_buff_data_t inner_mac_header; sk_buff_data_t transport_header; sk_buff_data_t network_header; sk_buff_data_t mac_header;
@@ -1466,6 +1468,7 @@ static inline void skb_reserve(struct sk_buff *skb, int len) static inline void skb_reset_inner_headers(struct sk_buff *skb) { + skb->inner_mac_header = skb->mac_header; skb->inner_network_header = skb->network_header; skb->inner_transport_header = skb->transport_header; }
@@ -1511,6 +1514,22 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb, skb->inner_network_header += offset; } +static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb) +{ + return skb->head + skb->inner_mac_header; +} + +static inline void skb_reset_inner_mac_header(struct sk_buff *skb) +{ + skb->inner_mac_header = skb->data - skb->head; +} + +static inline void skb_set_inner_mac_header(struct sk_buff *skb, + const int offset) +{ + skb_reset_inner_mac_header(skb); + skb->inner_mac_header += offset; +} static inline bool skb_transport_header_was_set(const struct sk_buff *skb) { return skb->transport_header != ~0U;
@@ -1604,6 +1623,21 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb, skb->inner_network_header = skb->data + offset; } +static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb) +{ + return skb->inner_mac_header; +} + +static inline void skb_reset_inner_mac_header(struct sk_buff *skb) +{ + skb->inner_mac_header = skb->data; +} + +static inline void skb_set_inner_mac_header(struct sk_buff *skb, + const int offset) +{ + skb->inner_mac_header = skb->data + offset; +} static inline bool skb_transport_header_was_set(const struct sk_buff *skb) { return skb->transport_header != NULL;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index d388e77..ba8f89c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c@@ -673,6 +673,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) new->mac_header = old->mac_header; new->inner_transport_header = old->inner_transport_header; new->inner_network_header = old->inner_network_header; + new->inner_mac_header = old->inner_mac_header; skb_dst_copy(new, old); new->rxhash = old->rxhash; new->ooo_okay = old->ooo_okay;
@@ -876,6 +877,7 @@ static void skb_headers_offset_update(struct sk_buff *skb, int off) skb->mac_header += off; skb->inner_transport_header += off; skb->inner_network_header += off; + skb->inner_mac_header += off; } static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
--
1.7.1